CVE-2020-8479 ABB Central Licensing System - XML External Entity Injection

Critical 9.4 Published 29 Apr 2020 Updated 4 Aug 2024

An attacker can exploit XML External Entity injection in ABB Central Licensing Server to read arbitrary files or block license handling.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-8479?

CVE-2020-8479 is a critical vulnerability in ABB Ability™ SCADAvantage, published on 29 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

For the Central Licensing Server component used in ABB products ABB Ability™ System 800xA and related system extensions versions 5.1, 6.0 and 6.1, Compact HMI versions 5.1 and 6.0, Control Builder Safe 1.0, 1.1 and 2.0, Symphony Plus -S+ Operations 3.0 to 3.2 Symphony Plus -S+ Engineering 1.1 to 2.2, Composer Harmony 5.1, 6.0 and 6.1, Melody Composer 5.3, 6.1/6.2 and SPE for Melody 1.0SPx (Composer 6.3), Harmony OPC Server (HAOPC) Standalone 6.0, 6.1 and 7.0, ABB Ability™ System 800xA/ Advant® OCS Control Builder A 1.3 and 1.4, Advant® OCS AC100 OPC Server 5.1, 6.0 and 6.1, Composer CTK 6.1 and 6.2, AdvaBuild 3.7 SP1 and SP2, OPCServer for MOD 300 (non-800xA) 1.4, OPC Data Link 2.1 and 2.2, Knowledge Manager 8.0, 9.0 and 9.1, Manufacturing Operations Management 1812 and 1909, ABB AbilityTM SCADAvantage versions 5.1 to 5.6.5. an XML External Entity Injection vulnerability exists that allows an attacker to read or call arbitrary files from the license server and/or from the network and also block the license handling.

Weakness: CWE-91

Which versions are affected by CVE-2020-8479?

It affects 3 products.

Products include Abb 800xa System, Abb Compact Hmi, Abb Control Builder Safe.

How do I fix CVE-2020-8479?

No fix has been published for CVE-2020-8479 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-8479 being exploited?

There is no known exploitation of CVE-2020-8479 in the wild and no public exploit code.

Sources

Also known as GHSA-37mh-m4cp-8v5p.